Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
  • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
  • H04B5/24—Inductive coupling
  • H04B5/26—Inductive coupling using coils
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
  • H04B5/43—Antennas
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
  • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
  • H04B5/24—Inductive coupling
  • H04B5/26—Inductive coupling using coils
  • H04B5/266—One coil at each side, e.g. with primary and secondary coils

Definitions

• the invention relates to a coupling device for wireless data and energy transmission and a coupling system for data and energy transmission.
• Connector systems for data and energy transmission are known. If connectors have to be loosened and plugged back together frequently, the wear on the contacts, even if they are of very high quality, is quite high. Such a scenario is known, for example, from industrial robotics, in which a robot arm, for example, often has to grip and replace interchangeable tools. The changing tool must be mechanically and electrically connected to the robot arm. The mechanical connection is made via a coupling, while the electrical connection is often made via plug connectors that are equipped with low-wear gold contacts.
• the invention is therefore based on the object of providing a coupling device and a coupling system which, in particular, replace an industrial connector and, thanks to a space-saving arrangement of the components within the coupling device, can enable both efficient wireless energy transmission and fast wireless data transmission.
• a core idea of the invention can be seen in creating a coupling device for wireless data and energy transmission, which is designed to i) supply energy inductively to a secondary coil of a coupling device functioning as a secondary coupler with the aid of an air-core coil functioning as a primary coil and a ferrite body having a through-opening to transmit and ii) data by means of a communication device in the form of electromagnetic Signals in a main emission direction through the passage opening of the ferrite body and through the air-core coil to form a complementary one
• Figure 1 shows an exemplary coupling device with a closed housing
• FIG. 1 shows the coupling device shown in Figure 1 with partially removed housing
• FIG. 3 shows the bottom view of the cover shown in FIG. 1 with the ferrite body and air core mounted on the cover
• FIG. 4 the one shown in FIGS. 2 and 3, arranged on the ferrite body
• FIG 5a is a schematic representation of the coupling device shown in Figure 2, in which the communication device is arranged at a distance from the ferrite body,
• Figures 5b and 5c schematic representations of an alternative coupling device in which the communication device is at least partially arranged in the through opening of the ferrite body
• FIG. 6 a mounted on a printed circuit board
• FIG. 7 that shown in FIG. 2 and in FIG. 5 a
• FIG. 8 shows an alternative, mounted on a printed circuit board
• Communication device comprising an optical transmitter and an optical receiver
• FIGS. 9 shows an exemplary coupling system which shows the coupling device shown in FIGS. 2 and 5a in the coupled state with a complementary coupling device, each of which is connected to an electrical and / or electronic device.
• FIG. 1 shows an exemplary coupling device 10 for wireless data and energy transmission, which can advantageously have a two-part housing which has a base part 20 and a cover 30 which is designed to close the base part 20. Furthermore, the coupling device 10 has an energy supply connection 40, to which an external energy supply source can be connected. In addition, the coupling device 10 has a communication interface 41 via which data can be sent to an external data sink or received from an external data source.
• the coupling device 10 is particularly suitable for use in an industrial environment, such as, for example, in robot-assisted automation systems.
• FIG. 2 shows the coupling device 10 shown in FIG. 1 with the housing 20, 30 partially removed.
• a communication device 60 for wireless data transmission is arranged in the housing 20, 30.
• the communication device 60 is designed in particular for emitting electromagnetic signals in a main beam direction. This means that the communication device 60 is designed in such a way that the majority of its radiated energy propagates along the main beam direction.
• the main emission direction runs parallel to an axis, here parallel to the y-axis of the coordinate system shown in FIG. 5a.
• a wireless energy transmission device 50 is arranged in the housing 20, 30, which has a ferrite body 51 with a through opening 53 and at least one air core 52 defining an opening 54, which is arranged on the ferrite body 51.
• two air coils arranged one above the other are indicated.
• the energy transmission device 50 is shown again in isolation in FIG.
• the ferrite body can, for example, have an essentially disk-shaped configuration in which the through opening 53 can be formed centrally.
• the inside diameter of the through opening 53 can be, for example, 14 mm, while the diameter of the disk-shaped ferrite body 51 can be, for example, 45 mm.
• the air-core coil 52 is arranged on a surface of the ferrite body 5, which preferably runs parallel to the cover 30, in such a way that the opening 54 defined by the air-core coil 52 is aligned with the through-opening 53. It should be noted that in the surface of the ferrite body 51 facing the cover 30, a groove can be cut into which the at least one air core coil 52 can be inserted. In this way, the position of the air core coil 52 with respect to the ferrite body 51 can be determined.
• the energy transmission device 50 can be detachably held on the cover, for example by means of latching lugs 31, which can be molded onto the cover 30.
• the at least one air core 52 is arranged between the ferrite body 51 and the cover 30.
• the air core coil 52, the ferrite body 51 and the communication device 60 are arranged in relation to one another in such a way that electromagnetic signals emitted by the communication device 60 travel in the main emission direction 80 through the passage opening 53 of the ferrite body 51 and through the opening 54 of the at least one air core coil 52.
• the through opening 53 and the opening 54 of the air core coil 52 thus form a type of funnel for the electromagnetic signals emitted by the communication device 60, by means of which data from a data source can be transmitted.
• the communication interface 41 of the coupling device 10 can also be seen in FIG. 2.
• the cover 30 preferably has an area that is permeable to electromagnetic waves, the main emission direction 80 running orthogonally to the area that is permeable to electromagnetic waves, as can be seen in particular in FIG. 5a.
• the area of the cover 30 that is permeable to electromagnetic waves is in particular aligned with the through opening 53 of the ferrite body 51 and the opening 54 of the air-core coil 52.
• the entire cover 30 is preferably made of a plastic material that is permeable to electromagnetic waves.
• the base part 20 of the housing can have a base wall 22, to which a printed circuit board 70, on which the communication device 60 is mounted, can be arranged in parallel.
• the printed circuit board 70, the at least one air core coil 52 and the Ferrite bodies 51 are each arranged in different planes, which are arranged parallel to one another and parallel to a plane spanned by the x and z axes.
• the main beam direction 80 runs perpendicular to these planes.
• the communication device 60 has an antenna device which is designed to emit radio signals in the main beam direction 80, the radio signals emitted being in a first frequency band.
• a frequency band is preferably used which provides a sufficiently high bandwidth in order, for example, to be able to send and receive radio signals simultaneously over different frequencies. It proves to be advantageous to use a frequency band which has relatively poor propagation properties. For example, an ISM band in the gigahertz range is used for this.
• the first frequency band is preferably within a frequency range of 57-66 GHz. It is also conceivable to use an ISM band which is in a higher frequency range.
• the communication device 60 which has an antenna device, is also designed to receive radio signals in a second frequency band.
• the received radio signals have a main reception direction which coincides with the main emission direction 80 if a single antenna is used for transmitting and receiving, and which extends parallel to the main emission direction 80 through the through opening 53 of the ferrite body 51 and through the opening 54 of the at least one air core coil 52 extends when a transmitting antenna and a receiving antenna are used spatially separated for transmitting and receiving.
• the first frequency band and the second frequency band are preferably different, but they can also be the same.
• the second frequency band is also preferably an ISM band in the gigahertz range, which is preferably within a frequency range of 57-66 GHz.
• the antenna device of the communication device 60 can have a common antenna 63 for transmitting and Have receiving radio signals.
• FIG. 6 shows an exemplary circuit board 70 with the communication device 60, which has the common antenna 63 as the antenna device.
• the printed circuit board 70 equipped by way of example is used in the coupling device 10, which is shown by way of example in FIG. 2 and FIG. 5a.
• high-frequency electronics 200 can be used in a manner known per se, which have, for example, a duplexer that reciprocally allows only radio signals in the first frequency band to be emitted by the antenna 63 or radio signals in the second frequency band to be received by the antenna 63 can.
• the first frequency band and the second frequency band can be the same for the radio signals to be transmitted and the radio signals received.
• a diplexer known per se can also be used.
• communication device 60.1 can also be used, which has a transmitting antenna 61 and a receiving antenna 62 spatially separated therefrom, as shown in FIG.
• the communication device 60.1 can in turn be mounted on a circuit board 70.1.
• the two antennas 61 and 62 can be controlled by high-frequency electronics 190 in a manner known per se.
• Both the transmitting and receiving antenna 63 shown in FIG. 7 and the transmitting antenna 61 and receiving antenna 62 shown in FIG. 6 can be connected to the communication interface 41 in particular via the high-frequency electronics 200 or 190, as can be seen in FIG. 5a.
• the communication interface 41 can be designed as an optical or as an electrical communication interface.
• the communication interface 41 can advantageously be an Ethernet-based one
• the high-frequency electronics 200 can also be part of the communication device 60, while the high-frequency electronics 190 can also be part of the communication device 60.1. It goes without saying that the high-frequency electronics 190 are on the same side of the circuit board as the antennas 61 and 62 or also on the back of the Circuit board 70 can be arranged. It is also conceivable to provide further printed circuit boards in the housing 20, 30, on which electronics and / or electrics required for the operation of the coupling device 10 are mounted. In a manner known per se, the high-frequency electronics 190 or 200 can each have a modulator for modulating the electromagnetic waves with data to be transmitted and a demodulator for demodulating received electromagnetic signals.
• connections 55 of the air-core coil 52 which can be seen in particular in FIG. 3, can be connected to the energy supply connection 40 directly or via corresponding voltage converters (not shown), as is shown schematically in FIG. 5a.
• the two antennas 61 and 62 can each be designed as patch antennas and arranged on the circuit board 70.1.
• the transmitting and receiving antenna 63 according to FIG. 7 can be designed as a patch antenna and arranged on the circuit board 70.
• a communication device 60.2 can be provided, which can have an optical transmitter 64 and, if necessary, an optical receiver 65 spatially separated therefrom, as shown in FIG is shown schematically.
• the optical transmitter 64 and the optical receiver 65 can in turn be mounted on a circuit board 70.2, the circuit board 70.2 in turn being able to be used instead of the circuit board 70 or the circuit board 70.1 in the coupling device 10 shown in FIG.
• An LED or a laser diode can be used as the optical transmitter 64 in a manner known per se, while the optical receiver 65 can be implemented, for example, as a phototransistor.
• control electronics 210 can be provided on the printed circuit board 70.2, which control electronics can control the optical transmitter 64 and the optical receiver 65 for sending and receiving optical signals.
• Optical reception signals and optical transmission signals can differ, for example, in terms of wavelength.
• the optical transmitter 64 is designed to transmit optical To emit signals in a main beam direction through the through-opening 53 of the ferrite body 51 and the opening 54 formed by the air-core coil 52, which runs parallel to the y-axis shown in Figure 5a.
• the optical signals received by a complementary coupling device from the optical receiver 65 have a main beam direction through the passage opening 53 of the ferrite body 51 and through the opening 54 of the air-core coil 52, which runs essentially parallel to the main beam direction of the optical transmitter 64.
• FIG. 5b An alternative coupling device 110 for wireless data and energy transmission is shown in FIG. 5b.
• the coupling device 110 essentially differs from the coupling device 10 in that a communication device 160, which is designed to emit electromagnetic signals in a main beam direction 180, is arranged at least partially within a through opening 153 of a ferrite body 151.
• the communication device 160 can be arranged on a circuit board 160 in a manner similar to the communication device 60.
• the explanations relating to the coupling device 10 thus essentially also describe the coupling device 110.
• At least one air coil 152 which defines an opening 154, can be arranged on the ferrite body 151.
• the air core coil 152 and the ferrite body 151 form an energy transmission device 150, which can be constructed essentially like the energy transmission device 50.
• the coupling device 110 preferably has a power supply connection 140 and a communication interface 141.
• FIG. 5c shows the coupling device 110 shown in FIG.
• the ferrite body 53 is designed in the form of a disk, the air-core coil 52 also being the same May have cross section.
• the main beam direction of the communication device 60, 60.1 or 60.2 runs essentially parallel to the axis of rotation of the ferrite body 51 and the air core coil 52.
• the ferrite core 51 and thus the air core coil 52 can be detachably mounted on the cover 30 via locking lugs 31 to 33.
• the ferrite body 151 and thus the air core coil 152 can also be detachably mounted on the cover 30.
• an exemplary coupling system 300 is provided, which is illustrated by way of example in FIG.
• the coupling system 300 has a first coupling device, which in the present example is the coupling device 10 shown in FIG. 2, FIG. 5 a and FIG. 7, and a second complementary coupling device 310.
• the coupling device 10 is connected to the electronic and / or electrical device 220 via the energy supply connection 40 and the communication interface 41.
• the electrical and / or electronic device 220 has a data source that generates data for wireless transmission to the electrical and / or electronic device 230 and can feed it to the communication interface 41 via an electrical or optical transmission medium.
• the electrical and / or electronic device 220 has, for example, an energy supply device which, for example, transmits energy to the energy supply connection 40 via an electrical line, which energy is then transmitted wirelessly via the energy transmission device 50 and the complementary coupling device 310 to the electrical and / or electronic device 230 can.
• both the coupling device 10 and the complementary coupling device 310 are designed to process the energy supplied by the electrical and / or electronic device 220 in such a way that the components of the coupling device 10 and the components of the coupling device 310 are supplied with suitable energy can be supplied.
• the term “complementary” means in particular that at least one communication device 360 of the coupling device 310 is designed to be complementary to the communication device 60 of the coupling device 10. In the embodiment shown in FIG. 9, this means that both the communication device has the single transmitting and receiving antenna 63 shown in FIG. 6 and the communication device 310 has a single transmitting and receiving antenna 363, which are arranged in alignment with one another in the coupled state. In this example, the main emitting device and main receiving beam direction, which run parallel to the x-axis, coincide with respect to the communication device 60.
• the communication device 360 also contains a transmitting antenna and a receiving antenna that is spatially separated therefrom.
• the transmission antenna 61 is arranged in alignment with the reception antenna of the communication device 360, while the reception antenna 62 is arranged in alignment with the transmission antenna of the communication device 360.
• the main radiation direction of the transmitting antenna 61 and, if present, that of the transmitting antenna of the communication device 360 run parallel to one another and parallel to the x-axis of the coordinate system shown in FIG. 9.
• a similar, complementary design of the coupling device 360 results when the communication device 60.2 including the optical transmitter 64 and the optical receiver 65 is implemented in the coupling device 10.
• the transmitting and receiving antenna 363 of the communication device 360 can be arranged on a circuit board 370.
• the coupling device 310 is preferably constructed similarly to the coupling device 10.
• the coupling device 310 has a housing 320, 330 which has a cover 330 and a base part 320.
• the communication device 360 for wireless data transmission is arranged in the housing 320, 330, the communication device 360 being designed to receive electromagnetic signals in a main receiving direction.
• the main direction of radiation of the transmitting and receiving antenna 63 of the coupling device 10 and the main receiving direction of the transmitting and receiving antenna 363 of the coupling device 310 lie on a common line 380 which is parallel to the x-axis of the coordinate system shown in FIG.
• the energy transfer device 350 having an air core coil 352 and a ferrite body 351 is detachably mounted in the housing, preferably on the cover 330 of the housing of the coupling device 310.
• the energy transfer device 350 can be designed similarly to the energy transfer device 50 of the coupling device 10 shown in FIG. A more detailed explanation is therefore not necessary.
• the communication device 360 are arranged with respect to one another in such a way that the electromagnetic radio signals transmitted by the transmitting and receiving antenna 63 of the coupling device 10 pass through the opening 354 of the air core coil 352 and through the through opening 353 of the Spread the ferrite body 351 to the communication device 360 or to the transmitting and receiving antenna 363.
• the through opening 53 of the ferrite body 51, the opening 54 of the air core coil 52 of the first coupling device 10 are aligned with the through opening 353 of the ferrite body 351 and the opening 354 of the air core coil
• the air coil 52 of the first coupling device 10 functions as the primary coil and the at least one air coil 352 of the second coupling device 310 functions as the secondary coil for a wireless Energy transfer.
• the coupling device 10 and the coupling device 310 in the coupled state there is a small distance between the coupling device 10 and the coupling device 310, which can be between 0 and 10 cm, for example. It is of course also conceivable that the two coupling devices 10 and 310 touch one another in the coupled state.
• the covers 330 and 30 each act as coupling surfaces of the coupling system 300.
• data can be transmitted from device 230 via transmitting and receiving antenna 363 of coupling device 310 to transmitting and receiving antenna 63 of coupling device 10 and from there to device 220.
• a coupling device 10 for wireless data and energy transmission is created, which is shown by way of example in FIGS. 2 and 5a in connection with FIGS. 3 and 4. It has, for example, the following features: a housing 20, 30, a communication device 60 arranged in the housing 20, 30 for wireless data transmission, the communication device 60 for emitting electromagnetic signals in a main beam direction, which is, for example, parallel to that shown in FIG y axis runs, is formed, and a wireless energy transmission device 50 arranged in the housing 20, 30, which has a ferrite body 51 with a through opening 53 and at least one air core 52 defining an opening 54, which is arranged on the ferrite body 51, the Air-core coil 52, ferrite body 51 and communication device 60 are arranged to one another in such a way that electromagnetic signals emitted by communication device 60 in the main emission direction propagate through through-opening 53 of ferrite body 51 and through opening 54 of at least one air-core coil 52.
• the energy transmission device 50 and the communication device 60 can for example be arranged one behind the
• the communication device 60 can advantageously have an antenna device 61, 62 or 63, which can be designed to emit radio signals in a first frequency band and to simultaneously receive radio signals in a second frequency band, the first and second frequency bands each being an ISM band in GHz Range and can advantageously be within a frequency range of 57 to 66 GHz or in a higher frequency range.
• FIGS. 5b and 5c An alternative coupling device 110 for wireless data and energy transmission is shown in FIGS. 5b and 5c. It has, for example, the following features: a housing 120, 130, a communication device 160 arranged in the housing 120, 130 for wireless data transmission, the communication device 160 being designed to emit electromagnetic signals in a main emission direction, a wireless energy transmission device arranged in the housing 120, 130 150, which has a ferrite body 151 with a through opening 153 and at least one air core 152 defining an opening 154, which is arranged on the ferrite body 151, the through opening 153 of the ferrite body 151 and the opening 154 of the air core 152 being aligned with one another, and wherein the Communication device 160 is arranged at least partially within the through opening 153 of the ferrite body 151.
• the communication device 160 can advantageously have an antenna device which can correspond to the antenna device 61, 62 or 63.
• the antenna device can be designed to emit radio signals in a first frequency band and to simultaneously receive radio signals in a second frequency band, the first and second frequency band each being an ISM band in the GHz range, and advantageously each may be within a frequency range of 57 to 66 GHz or a higher frequency range.
• the air-core coil 152, the ferrite body 151 and the communication device 160 are advantageously arranged with respect to one another in such a way that electromagnetic signals emitted by the communication device 160 in the main emission direction can propagate through the through-opening 153 of the ferrite body 151 and through the opening 154 of the at least one air-core coil 152.
• the coupling device 10 or 110 preferably has one with which at least one air core coil 52; 152 electrically connected power supply connection 40; 140, to which an external energy supply device can be connected, and one with the communication device 60; 160 electrically or optically connected communication interface 41; 141, to which an external news source 220 can be connected.
• the housing 20, 30; 120, 130 can preferably have a cover 30; 130 and a base 20; 120 have which through the cover 30; 130 can be covered, wherein the energy transmission device 50; 150 on cover 30; 130 is mountable.
• the cover 30, 130 can preferably have an area that is permeable to electromagnetic waves, the main emission direction running orthogonal to the area that is permeable to electromagnetic waves.
• the cover 30, 130 is preferably made from a plastic material.
• the first frequency band can be an ISM band in the GHz range, which is preferably within a frequency range of 57 to 66 GHz.
• the antenna device can be designed to receive radio signals in a second frequency band, the received radio signals having a main reception direction which extends parallel to the main emission direction through the through opening 53 of the ferrite body 51 and the opening 54 of the at least one air core coil 52, depending on the implementation , the first frequency band and the second frequency band can be different or the same.
• the second frequency band can be an ISM band in the GHz range and is preferably within a frequency range of 57 to 66 GHz.
• the antenna device 60 and also the antenna device of the coupling device 110 can each have a common antenna 63 for transmitting and receiving radio signals, the received radio signals having a main receiving direction which can preferably coincide with the main emitting device.
• the antenna device 60 and also the antenna device of the coupling device 110 can have a transmitting antenna 61 and a separate receiving antenna 62, the received radio signals having a main receiving direction, which is preferably at least partially parallel to the main radiation direction through the through opening 53 of the ferrite body 51 and the opening 54 which extends at least one air core coil 52.
• Both the common antenna 63 for transmitting and receiving as well as the transmitting antenna 61 and the receiving antenna 62 separate therefrom can each be designed as a patch antenna.
• the communication device 60.2 can have an optical transmitter 64 for emitting optical signals in the main beam direction and optionally an optical receiver 65 for receiving optical signals, the received optical signals having a main beam direction which extends parallel to the main emission direction through the through opening 53 of the Ferrite body 51 and the opening 54 of the at least one air coil 52 extends.
• a control device 200, 190, 210 is preferably assigned to the communication device 60, 60.1, 60.2.
• a coupling system 300 shown as an example in FIG electronic and / or electrical device 220 is connectable, and a second, complementary coupling device 310, which is connectable to a second electrical and / or electronic device 230 and can have the following features: a housing 320, 330, one in the housing 320, 330 Communication device 360 for wireless data transmission, wherein the communication device 360 can be designed complementary to the communication device 60 for receiving electromagnetic signals in a main receiving direction, and a wireless energy transmission device arranged in the housing 320, 330, which has a ferrite body 351 with a through opening 353 and at least one, an opening 354 defining air core coil 352, which is arranged on the ferrite body 351, wherein the air core coil 352, the ferrite body 351 and the Communication device 360 are arranged to one another in such a way that received electromagnetic signals propagate in the main receiving direction through the through opening 353 of the ferrite body 351 and through the opening 354 of the at least one air coil 35

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Near-Field Transmission Systems (AREA)
• Transmitters (AREA)

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• 2020
  • 2020-04-09 BE BE20205236A patent/BE1028203B1/de active IP Right Grant
• 2021
  • 2021-04-01 BR BR112022016863A patent/BR112022016863A2/pt unknown
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  • 2021-04-01 EP EP21715905.2A patent/EP4133607B1/de active Active
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